Bur-crushing mechanism



F. HARTLEY AND T. KELLEY.

BUR CRUSHING MECHANISM.

APPUCATION FILED JUNE 25 1919- Patented Feb. 8,1921;

2 SHEETS-SHEET I.

F. HARTLEY AND T. KELLEY. BUR cnu'snme MECHANISM.

1 APPLICATION FILED JUNE 25, I919. 1,367,700. Patented Feb. 8,1921.

[SHEETS-SHEET 2.

E1021: Harzlqy T/zomas ZZZ/6% 72550. fi l/01726 I PATENT since.

warren stares FRANK HARTLEY, OF SHIPLEY, AND THOMAS KELLEY, OF BRADFORD, ENGLAND.

BULPt-GR'USHING MECHANISM.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed June 25, 1919. Serial No. 306,705.

To all 10 ham it may concern Be it known that we, FRANK HARTLEY and THOMAS KELLEY, subjects of the King of Great Britain, residing at Shipley and Bradford, both in the county of Yorkshire and Kingdom of England, respectively, have invented certain new and useful Improvements in Bur-Crushing Mechanism, of which the following is a specification. I

This invention has reference to calendering machines, bur crushers and other apparatus where the material to be treated is drawn between a pair of rollers for the purpose of smoothing it, or for crushing the burs or other foreign matter contained therein, and so on. The said invention has been designed more especially for use in connection with wool carding and analogous machines for crushing burs or other impurities in a sheet or sliver, wherein a weighted top roller is capable of being moved into and out of contact with a bottom roller, but it is applicable for other purposes as above indicated.

Prior to this invention, it has been proposed to mount at each end of the apparatus and in contact with the bearings of the upper roller a cam member for raising the upper roller out of contact with the lower one, or for lowering the same into contact therewith. spindles mounted so as to extend longitudinally of the bearings and each cam was operated by means of a lever, the levers being in turn connected by a rod so that the cams were operated together by pulling the rod forwardly and rearwardly. The weighted top roller was driven from the lower one by toothed wheels the teeth of which were made deep so that they were not moved out of mesh. in our experience we have found that great forcehad to be applied to the rod in order to turn these squared cam spindles which extended the full length of each bearing, because of the surface friction to be overcome in order to lift the weighted top roller. In fact it was proposed to turn the said squared cam spindles by means of a worm gear so as to give a more powerful effect with a diminished rate of motion. Furthermore, we have in our experience not found the deep toothed wheels run smoothly; in fact, inorder to try and make them run more smoothly it was proposedto inclose them inan oil'tight-case so'as to revolve in an oil'balth.

Such cams comprise squared Our present invention is designed to avoid the use of these squared cam spindles and to substitute therefor a device which will require less power to operate it; also to dispense with the deep toothed wheels and substitute therefor, a driving gear which will run more smoothly.

Our improvement is characterized in that spindles circular in cross section are mounted at each end of the apparatus and in contact with the bearings of the upper roller, a rounded stud or ball being provided on each spindle, and a corresponding depression on the under side of the bearings so arranged that turning of the spindles will raise the upper roller when therounded projection mpacts against the underside of the bearlugs, and also snap into the depression so as to prevent accidental disengagement. A further feature of our invention is that the upper roller is driven from the lower one by a chain drive, the chain being passed from chain wheels on the roller spindles to a tightening jockey sprocket wheel or wheels. We are aware that it has been proposed to provide wringing and mangling machines with chain drives having a chain tightening wheel; but such drives have not been used so far as we are aware in connection with bur crushers. p

The invention will be understood from the following description reference being had to the accompanying drawings, in which z- Figure l is an end elevation and Fig. 2 is a side elevation of an apparatus constructed according to our invention, as applied to the delivery end of a carding engine;

Figs. 3 and i are detail views in end and side elevation.

Fig. 5 is a detail view of thebracket 19 shown in Fig. 2, l

Fig. 6 is a side elevation of a portion of a carding engine showing our apparatus applied between the dofler and the angle strippers instead of at the delivery end of the carding engine.

In carrying the invention into effect, the upper and lower rollers land 2 are journaled in hearings or bushes which arelocated in upstanding supports 3 on the main i driven from the lower roller '2 by'meansl-of a chain and sprocket gear, there being a sprocket wheel 5 secured to the upper roller 1, a sprocket wheel 6 secured to the shaft of the lower roller 2, and two jockey or idle sprocket wheels 7 one at each side of the latter, one or both of which are adjustable to vary the tension of the driving chain 8. The driving chain 8 is passed over the sprocket wheel 5 of the upper roller, under the jockey sprocket wheels 7, and over the sprocket wheel 6 which is secured to the shaft of the lower roller, and this chain transmits a positive drive in the right direction to the upper roller 1. A suitable amount of slack is left in the chain to allow the upper roller 1 to be lifted, this slack being adjustable by the jockey sprocket wheels '7 as aforesaid, so that there is no danger of the chain and sprocket wheels coming out of mesh as would be the case with toothed gear.

Journaled in each of the two upstanding supports 3 is a transverse spindle 9 to which is aflixed a disk or boss 10 having a rounded stud 11 or ball projecting therefrom, and the front end of each spindle is provided with a lever 12 by which such spindles 9 can be turned. The said disks are located immediately under the hearings or bushes 13 in which the upper roller 1 is journaled, so that by turning the levers 12 in one direction the studs 11 impact against the underside of the hearings or bushes 13 and lift the upper roller 1, or by turning the levers 12 in the other direction the upper-roller 1 descends by its own weight or the weights 14 by which it is loaded. These rounded studs or balls 11 prevent the least possible surface friction, so that only a very moderate amount of force has to be expended to lift the roller. Those parts of the bearings or bushes 13 against which the studs 11 impact are formed with V shaped or other suitably shaped recesses 15 so that points of the studs 11 will snap thereinto and so prevent accidental disengagement. The two levers 12 may be operated separately if desired, first one and then the other, or the said two levers may be connected together by a hand bar 16 so that both ends of the upper roller 1 may be operated simultaneously. This hand bar is to the front of but below the rollers. The chain and sprocket gear may be covered by an oil tight case or guard. 17 is a handle by which the lifting and lowering of the roll 1 is effected, simultaneously at each end. The dotted lines show the po sition that the parts assume when the upper roller 1 is in the raised position. The jockey sprocket wheels are mounted freely on headed stub spindles 18 secured by nuts to a bracket 19 bolted to the frame 4t of the machine, and one ear of the bracket in which one of the stud spindles is mounted is slottedto allow for adjustment to tighten or loosen the chain as shown. 7 r

isearoo are driven from the lower roller 23 by means of a chain and sprocket gear, there being a sprocket wheel 25 secured to each upperroller, a sprocket wheel 26 secured to the lower roller, and a jockey sprocket wheel 27 which is adjustable. The driving chain 28 is passed over the sprocket wheels 25, under the jockey wheel 27 and over the sprocket wheel 26 and this chain transmits a positive drive in the right direction to the upper rollers. Journaled in supports is a spindle 29 in which are two small recesses 30, while the underside of the bearings 21 are provided with rounded studs or balls which enter these recesses. The spindle is provided with a hand wheel 31 by which it can be turned. The turning of this hand wheel in one direction causes the recesses 30 to be moved clear of the studs, thus lifting the upper rollers 20, or by turning the hand wheel 31 in the other direction, the studs drop back into the recesses thus lowering the upper rollers 20 relative to the lower one 23. 32 is the doffer, 33 the dotting knife, 34 the angle stripper, 35 the stripper and 36 elevator.

The advantages and operation ofthis improved appliance will now be apparent. It is to be understood however that we do not consider ourselves limited to the precise de- 1. In apparatus for crushing burs inwool or for like purposes, wherein the material under treatment is passed between rollers,

the combination with the upper weighted roller or rollers, of spindles located beneath the bearings thereof, and rounded studs or balls provided on said spindles which serve to raise or lower said upper roller or rollers on the turning of said spindles without necessitating the removal of the weights.

2. In apparatus for crushing burs in wool or for other like purposes, wherein the material under treatment is passed between rollers, the combination with the upper cated beneath the bearings thereof, rounded studs or balls provided on said spindles which serve to raise or lower said upper roller or rollers on the turning of said spindles without necessitating the removal of the weights, and recesses on the under side of the bearings into which the rounded studs or balls are adapted to snap to prevent accidental disengagement of the parts.

3. In apparatus for crushing burs of wool, or for like purposes, wherein the material under treatment is passed between rollers, the combination with the underside of the upper weighted roller or rollers, of spindles located beneath the bearings thereof and provided with recesses, and rounded studs or balls on the under side of the bearings adapted to engage said recesses so that the turning of the spindles in one direction causes the recesses to be moved clear of the studs, and thereby lift the rollers.

a. In apparatus for crushing burs in wool or for like purposes, wherein the material under treatment is passed betweenrollers, means for raising or lowering the upper roller relative to the lower one, and gear for driving the upper roller from the lower one and so arranged as to prevent the rollers coming out of gear, such gear comprising sprocket wheels secured to the roller shafts, a jockey pulley or pulleys mounted on said stud spindles capable of adjustment, and a driving chain passing around said sprocket wheels.

In witness whereof we have hereunto signed our names this fourth day of June. 1919, in the presence of two subscribing wit nesses.

FRANK HARTLEY. THOMAS KELLEY.

WVitnesses:

ARTHUR WILLIAM BAYNES, JOHN PRATT. 

